import org.eclipse.jface.viewers.ColumnViewer;
import org.eclipse.jface.viewers.ColumnViewerEditorActivationEvent;
import org.eclipse.jface.viewers.ColumnViewerEditorActivationStrategy;
import org.eclipse.jface.viewers.IStructuredSelection;

public final class DoubleClickColumnViewerEditorActivationStrategy extends
        ColumnViewerEditorActivationStrategy ...{
    public DoubleClickColumnViewerEditorActivationStrategy(
            ColumnViewer viewer) ...{
        super(viewer);
    }

    /** *//**
     * Create at Jan 18, 2008 5:38:15 PM<br>
     * (non-Javadoc)
     * 
     * @see org.eclipse.jface.viewers.ColumnViewerEditorActivationStrategy#isEditorActivationEvent(org.eclipse.jface.viewers.ColumnViewerEditorActivationEvent)
     */
    @Override
    protected boolean isEditorActivationEvent(
            ColumnViewerEditorActivationEvent event) ...{
        boolean singleSelect = ((IStructuredSelection) getViewer()
                .getSelection()).size() == 1;
        return singleSelect
                && (event.eventType == ColumnViewerEditorActivationEvent.MOUSE_DOUBLE_CLICK_SELECTION
                        || event.eventType == ColumnViewerEditorActivationEvent.PROGRAMMATIC || event.eventType == ColumnViewerEditorActivationEvent.TRAVERSAL);
    }
}

注意红色地方, 这是和原来不一样的. 原来是单击.

然后调用

TableViewerEditor.create(viewer, new DoubleClickColumnViewerEditorActivationStrategy(viewer), ColumnViewerEditor.DEFAULT);

就OK了.

正好今天在网上看到有其他兄弟写的添加MouseListener的做法, 私下以为虽然可能达到了功能目的, 但是代码增加不少, 而且和SWT的设计理念也有些差异. 可能多看看SWT的源码, 会有比较好的解决方案.

TreeViewer和TableViewer一样, 看看源码就明了了.